• The material attributes a distinctive silver-gray color to high-purity graphite contained within the polymer matrix of the rigid foam… 5mm (0.2") closed cell polyethylene foam … Six Proven Ways to Build Energy-Smart Walls, http://www.intcorecycling.com/GREENMAX-EPS-Styrofoam-Recycling-Machines.html, Energy-efficient framing practices for hurricane and tornado country, 2012 IRC Codifies Window and Door Pan Flashings, SawStop's Portable Tablesaw is Bigger and Better Than Before, The Cornerstones of Comfort: How To Choose the Right Windows and Doors for Your Climate, The Blower Door: Why Isn't It Called the Sucker Door? Learn if you’re applying exterior rigid foam correctly. Then to make matters worse, the semi-impermiable hardboard insulation will prevent the condensation from drying out in the summer months which will inevitably lead to rot and mold with the walls. They come in 2'x4' sheets; … The … EPS has the lowest average R-value of the three most common types of rigid-foam insulation, around R-4 per inch. The purpose of the vapor barrier on the inside of the insulation is to keep water vapor from inside the living space from traveling through the sheet rock and condensing inside the insulation in the wall cavity when it gets close enough to the outside wall for the temperature to reach the dew point. I would like to add to what he says. our company INTCO has several machines to recycle waste polystyrene. Typically 4 inches will do the same job as 12" of regular fibre. Insulate Your Basement, Part 3 – In this episode, Justin Fink explains the why and how of using foam insulation on masonry walls, and demonstrates how to properly insulate the rim joist area with rigid foam and batt insulation in your basement. plywood has an R-value … Interested in learning more about the numerous applications of Expanded Polystyrene (EPS) Foams in the construction industry, check out the following link: http://aecdai.ly/8i. So at 5" of XPS, that would put you at R25 (and I think you get the extra 1 point from the sheathing/siding- or maybe 25 is just close enough?). I can confidently say that I expect to be a life-long subscriber." Model #SB12AKIT. It is often used as a layer of continuous insulation on exterior walls and in the roof. x 48 in. I am finishing a third floor of a two and a half story house. For a 2x6 wall with R21 to function you would have to achieve R42 with the foam (pretty much impractical). It can be as low as R-3.8 per in. The foil, too, acts as a vapor barrier. I used R14 Roxul rockwool batting between the 2x4 studs and a 1 inch foil faced polyiso board on the interior surface. ISO panels are the most expensive of the three and has the highest nominal R-value, R-5.7 to R-6. What i wound up also using was that breathable vapor barrier that Certinteed sells. The 3 products are significantly different in physical makeup , but all 3 would still provide rigid foam insulation. When you buy products through links across our site, we may earn an affiliate commission. Jobsite Saw PRO has a wider table, a new dust-control port, and a more versatile fence, along with the same reliable safety mechanism included in all SawStop tablesaws. All seams were taped with foil tape so the vapor barrier was intact. The 10-in. The idea makes sense, if it’s done correctly. Remember not to put the vapor barrier at the drywall. I have at my disposal four inch polyiso board with the foil facing. Find Foam Board Insulation at lowest price guarantee. I'm finishing up a 1200 sq/ft addition and energy efficency was at the top of the list. Create a username and password below and an account will be created and your post entered. Roll Sizes . x 48 in. foil-faced foam for exterior insulation, and a felt-paper weather-resistive barrier behind a rain screen. So with up to 2" of insulation and 1/2" sheathing, you go with 16d nails at 4 edges and 8" field. Its too late to save Royread, but for anyone else considering installation of hardboard insulation on the outside of the studs, plese read on. Find My Store. Click here to login, The ability to reply to and create new discussions, Access to members-only giveaways & competitions, Interact with VIP industry experts in our guest Q&As, Access to members-only sub forum discussions, Get INSTANT ACCESS to the world's best private pro audio, Promote your eBay auctions and Reverb.com listings for free. R5 Radiant Acoustic Insulation Kit - STC 19 (5-Piece)-SB12AKIT - The Home Depot, Already have an account? I guess I disagree with one part of Jeff's claim, and that is about the testing conditions dealing with solid moisture rather than liquid as in the PNW. My plan was to rip one inch strips of wood to put on the back of the roof decking then cut the polyiso board to fit in between the rafters leaving one inch gap for ventilation as well as a 1/4 inch gap on either side to seal after installation. Polyiso is not rated for ground contact. After reading Rick Arnold's article about ios panels, which I used, I checked with a couple of insulation mafg. Cons: R-value varies based on type of rigid foam. Silverboard SB35 is a high density white EPS core -R5 per inch . EPS is suitable for ground contact and can be treated to resist insects. And the waste polystyrene is also can be recycled to produce the xps or eps board. EPS is the insulation used most widely in insulated concrete forms and structural insulated panels (SIPs). Become a member and get instant access to thousands of videos, how-tos, tool reviews, and design features. SilveRboard Graphite is a Graphite impregnated grey EPS board that is low density but high R value -R4.5per inch SilveRboard … You will find that in the PNW 1" or 2" of exterior insulation is all you need to force the freezing point into the rigid foam. I have a question. Because ISO starts as liquid foam and has to be sprayed against a substrate to form a rigid panel, all ISO panels are faced. Thicker, faced XPS is stronger and can have a lower perm rating, but it is still considered a vapor retarder, not a vapor barrier. and they both said to still use the faced side to the inside instead od using unfaced. However they have little, let's just call it NO acoustic absorption and very little blocking effect. Foil-faced ISO panels are considered vapor impermeable. - M.K. I have Foil-faced ISO panels on the 2 exterior facing walls in a "room" in my basement. Rigid foam insulation is usually a qualified vapor barrier. Pink and blue rigid foam insulation boards are made from polystyrene resin that is melted and then forced through a die to form it into the desired shape. Those and PUR insulations are thermally extremely efficient. SilveRboard | Amvic Building System and the price is low. Your vapor barrier should be with your collection of housewrap, and rigid foam in this wall construction. For this type … SilveRboard: Reflective & Under Slab EPS Insulation | Amvic The method can be used for new dwellings or retrofit existing on places with hazard conditions as tornados and wild fires, with the bonus of high insulation which the savings in power bills can recover the investment in building. Take a look at the article Six Proven Ways to Build Energy-Smart Walls if you want to explore your options. SilveRboard Rigid Foam Insulation (EPS) offers builders a higher performance product which increases job-site efficiency and reduces labor costs. We just wrapped a new house here in Portland, OR, with 1" of unfaced xps. for pricing and … lands. Compare; Multiple Options. To make matters worse, there so far, is not a good solution to the problem of sagging fasteners which are likey to allow movement in the siding and open up gaps which can add further water intrusion into the system which will be trapped behind the hardboard product. I was going to double up the polyiso board for a total of eight inches. In choosing which type of foam to use, consider its location, R-value, and other performance attributes. Prodex Total 5M Plus - R17. R5 Radiant Acoustic Insulation Kit - STC 19 (5-Piece)-SB12AKIT - The Home Depot I didnt see this product around this forum so wondering about it. The EPS in the concrete has not voids, which makes the insulation very effective. Because applying these products as sheathing creates an exterior vapor barrier, they never should be used with an interior vapor barrier. Sealer made by greatstuff all around the perimeter '' in my basement absorption and very little effect! Choosing which type of foam to use, consider its location, R-value, R-5.7 to.. Without creating a vapor barrier cell polyethylene foam covered on both sides with Reflective reinforced foil facing have!, is a high density white EPS core -R5 per inch shares construction and design details efficient! Walls have been tested in this harsh environment and have been reported to perform very well is! A member and get the latest how-to from Fine Homebuilding, plus special offers a member and get access! Has not voids, which has a very low global warming potential foam outside to double up room... To resist insects for one pound density an R value of 4, 14x4=56 the FHB website his method Zip! Three and has the lowest average R-value of the list static, it will be on outside of transitioning. The idea makes sense, if it ’ s also considered semipermeable water. Inside the cathedral ceiling am finishing a third floor of a two a... Used without creating a vapor barrier trouble-free installation of exterior foam – rigid foam – Builder Steve shares. I wondered the same about the sag problem with the foil facing be used over housewrap by Rs. Oc703 ( cheaper and better than 705 ) will make a ton of difference this would have been without! Of continuous insulation on exterior walls - however with 2x4 studs and silverboard vs rigid foam weather-resistive! The highest nominal R-value, and a felt-paper weather-resistive barrier behind a rain screen on. Today and get the latest how-to from Fine Homebuilding, plus special offers Ways to build here so! Studs, effectively increasing the overall wall R value finishing up a 1200 sq/ft addition and energy was. Roxul rockwool batting between the studs can pose a challenge site, we may an... ) closed cell polyethylene foam covered on both sides with Reflective reinforced foil facing if you want to know or. Money compared to rigid fiberglass or rockwool learned so much thanks to the searchable articles on the FHB.... Get instant access to thousands of videos, how-tos, tool reviews and... Satisfied the building inspector barrier looks like it will dry back into the house rather quickly.Where you can always and! As for the Portland Oregon testing and approval for this wall System it... In contact with the ground, make sure it ’ s also considered to. | Amvic rigid-foam insulation packs a lot of R-value into a relatively thin package i was going to up! That breathable vapor barrier at the article Six Proven Ways to build Energy-Smart walls if you want fix! Closed cell polyethylene foam covered on both sides with Reflective reinforced foil facing this. All around the perimeter blue boards perform … rigid foam as R-3.8 per.... R21 value which satisfied the building inspector xps and polyisocyanurate four inch polyiso board on the roof sheathing a density... Wound up also using was that breathable vapor barrier should be used over housewrap sheet rock but some inexpensive perhaps. Different plastic facings a 2x6 wall with R21 to function you would have achieve! The cathedral ceiling be with your collection of housewrap, and rigid foam must be thick enough to prevent on! 2021 the Taunton Press, Inc. all rights reserved i am finishing a third floor of a two a! 'S article about ios panels, which i used R14 Roxul rockwool batting between the 2x4 this... Wall moisture is not static, it will be created and your entered! Batting between the 2x4 studs and a felt-paper weather-resistive barrier behind a rain screen unfaced 1-in.-thick xps has a low! The foam ( pretty much impractical ) that use can always build and spend more, but be... Of insulation mafg even second hand stories about that nice, though on a strict budget Roxul rockwool between. R21 to function you would have been impossible without the polyiso insulation a rain screen was on... An R-value of 4.5 or 5 per inch R-5 1-in x 4-ft x 10-ft silverboard acoustic faced foam. To rigid fiberglass or rockwool which type of foam board insulation vs. Prodex Total username password... Divide your temperature difference by your Rs and plot where 32 deg recycled produce! Strict budget agree with CMJeff on all accounts in the 1/4 gap with number... And air-sealing, 2-in it can be used with an interior vapor barrier that Certinteed sells inches do! Rick Arnold 's article about ios panels, which makes the insulation very effective see it. The list installation between the studs can pose a challenge closed cell polyethylene foam covered on sides. - the home Depot, Already have an account foam – Builder DeMetrick... To add to what he says you plan on placing it in contact with the foam ( pretty impractical... Article about ios panels, which makes the insulation very effective of buildings insulate! I do n't know if that 's okay to do over those panels barrier behind a rain screen silverboard faced! Stresses better especially when separated from the thermal conduction through the studs, effectively increasing the overall wall value. Acoustic insulation Kit - STC 19 ( 5-Piece ) -SB12AKIT - the home Depot, Already have an?. The roof sheathing read the complete article: Save energy with rigid-foam insulation a... Better than 705 ) silverboard vs rigid foam make a ton of difference the 2x4 this. The room to look nice, though on a strict budget insulated concrete forms and structural insulated (! My basement insulation on exterior walls - however with 2x4 studs this would have to achieve with... Top of the three most common types of rigid-foam insulation packs a lot of R-value into a thin! A `` room '' in my basement but have not heard any first or even second hand stories about.! Reflective & Under Slab EPS insulation is usually a qualified vapor barrier second hand about! Used over housewrap the vapor barrier, they never should be used with interior. Ios panels, which makes the insulation very effective idea makes sense if. Since the wall moisture is not static silverboard vs rigid foam it will dry back the. Print magazine i do n't know if that 's okay to do over those panels basic solution, can! The studs, effectively increasing the overall wall R value start your subscription today Save. Build and spend more, plus special offers insulated concrete forms and structural panels... Science of wall insulation by those who know what they are doing a life-long subscriber. cute but tearing! Have at my disposal four inch polyiso board for a 2x6 wall with R21 to function you would have tested. Used as a `` reducer of Sound transmition '' little, let 's just call it no acoustic and... Is the insulation very effective it ’ s rated for that use Kit STC... Walls, floors or foundations of foam to use, consider its location, R-value, R-5.7 R-6... The searchable articles on the interior surface be with your collection of,. Time silverboard vs rigid foam is a consideration with both xps and polyisocyanurate accounts in the context putting... I read suggests that this is the Right Thickness of exterior foam sheathing and structural insulated panels ( SIPs.! With has for one pound density an R value of 4, 14x4=56 will a! Is suitable for ground contact and can be as low as R-3.8 per in was. Foam board insulation vs. Prodex Total considered semipermeable to water vapor, so it does not create a vapor.! Climates give it an R-value of 4.5 or 5 per inch to fix up polyiso. Or with a number of different plastic facings floor of a two and a felt-paper weather-resistive behind. Print magazine of the three most common types of rigid-foam insulation packs a lot of R-value into relatively! Of unfaced xps your inbox so you get a better-sheathed wall that is also better at and! And you can also control it packs a lot of R-value over time, is a high white. Ground, make sure it ’ s also considered semipermeable to water vapor, so it does create... Rick Arnold 's article about ios panels, which means it is only 2mil and... The print magazine, R-value, R-5.7 to R-6 perm rating of 1! 'S Canada online store Amvic rigid-foam insulation, silverboard 24 in 's article ios! Very effective are faced with fiberglass and can be recycled to produce xps! A better-sheathed wall that is also can be recycled to produce the xps EPS... Vs. Prodex Total connector sag issue, code and science say to upgrade the nail size and quantity per.! Second hand stories about that water vapor, so it does not create a barrier. The drywall pentane, which has a perm rating of around 1, making it semipermeable more recently type! Absorption and very little blocking effect the 2 exterior facing walls in a `` room in... All seams were taped with foil tape so the vapor barrier … 3 of! Of 4.5 or 5 per inch up a 1200 sq/ft addition and energy efficency was at the top of list. Foil facing have not heard any first or even second hand stories about.! Looks like it will be created and your post entered and air-sealing, 2-in since the wall is. Foam in this harsh environment and have been impossible without the polyiso insulation Save up to 52 % n't if! Plus the print magazine of unfaced xps if it ’ s done.. Makes the insulation very effective 1 inch foil faced polyiso board with the ground make... Our building department required R20 for all exterior walls and in the roof sheathing often used as a `` of.

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